Other, less common melatonin side effects might include abdominal discomfort, mild anxiety, irritability, confusion and short-lasting feelings of depression. In addition, melatonin supplements can interact with various medications, including: Blood-thinning medications (anticoagulants)
The rib cage also contains muscles with an expiratory action. These are the internal intercostal muscles, which slope backward; contraction causes the ribs to move downward and inward, similar to the lowering of a bucket handle.Both internal and external intercostal muscles are also involved in flexing and twisting the trunk.Read more about Breathe Strong, Perform Better.ntercostal muscle contraction also brings about stiffening of the rib cage during lifting, pushing, and pulling movements, which makes the intercostal muscles an important contributor to these movements.
They're called the intercostal muscles, though soreness in ribs might also be caused by soreness in your pectoralis minor (which connects to the front of the rib cage) or your serratus anterior (which connect your back to the side of your rib cage). would guess that the reason that your intercostal muscles are sore is because they are being used to hold the rib cage rigid, while forces are being transmitted between the serratus, pectoralis minor and rectus abdiminous.